Exam 11: Electronically Controlled Transmission

Technician A says the engine coolant temperature (ECT) value can be viewed on a scan tool. Technician B says a quick test can be made by unplugging the ECT and watching to see if the temperature changed on the scan tool. Who is correct?

Which of the following is installed in an engine coolant passage, often near the thermostat housing on an engine?

If the transmission is designed to shift to neutral at a stop for fuel economy, the transmission will engage 1st gear as soon as the brake pedal is released.

Technician A says that on most vehicles if the Electronic Pressure Control (EPC) solenoid fails the vehicle will have high line pressure. Technician B says that if an EPC fails it will cause a delayed shift in most vehicles. Who is correct?

What type of resistor is a transmission fluid temperature sensor?

Technician A says that manufacturers developed the electronically controlled automatic transmission to improve fuel economy. Technician B says that manufacturers have added more gears to their electronically controlled transmission to improve fuel economy. Who is correct?

Comparing the input shaft speed sensor to the output shaft speed sensor will allow for which of the following?

Which of the following is a pressure transducer?

What type of variable resistor are Transmission Fluid Temperature Sensors?

In a _______ controlled transmission, the shift points are controlled by hydraulic and mechanical devices such as springs and valves.

Slippery conditions require a _______ that enhances traction and the stability of motion of the vehicle.

Technician A says that when the input shaft speed sensor is reading 4500 rpm and the output shaft speed sensor is reading 1500 rpm, the PCM can determine a gear ratio of 3:1 in first gear. Technician B says that with an input shaft speed of 3000 rpm and an output shaft speed of 900 rpm, the PCM can calculate a ratio of 3.3:1 and set a diagnostic trouble code. Who is correct?

Which of the following actions enhances traction and the stability of motion of the vehicle in slippery conditions?

Which of the following describes the operation of shift solenoids?

Two technicians are discussing electronically controlled automatic transmissions. Technician A says inside many transmissions, there are small pressure switches. Technician B says these small pressure switches are simple open or closed type switches. Who is correct?

Which of the following sends either simple on/off signals or pulse-width-modulated signals to the actuators, depending on the actuator being controlled?

Technician A says that the TCC cannot transmit torque very well without slipping when an engine is under load. Technician B says that the MAP sensor is used by the PCM/TCM to prevent TCC clutch lockup when under a load. Who is correct?

In many transmissions, the solenoids indirectly operate the:

As the Engine Coolant Temperature ECT resistance changes, the sensor signal voltage changes, allowing the Powertrain Control Module (PCM) to determine the coolant temperature.

Chrysler Powertrain and Transmission Control Modules calculate a parameter called Clutch Volume Index (CVI). What can the CVI value be used for?